<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./index.css">
</head>

<body id="top">
    <header>
        <div class="logo-wrapper"><img src="./img/default_logo.png" id="logo"></div>
        <nav class="pages-nav">
            <div><a>导航1</a></div>
            <div><a>导航2</a></div>
            <div><a>导航3</a></div>
        </nav>
        <div class="center input-wrapper">
            <input id="search">
        </div>
    </header>
    <main>
        <article>
            <h1>title</h1>
        </article>
        <aside>
            <div></div>
            <div></div>
            <div></div>
            <div class="menu">
                <h4>目录</h4>
                <ul>
                    <li>标题1</li>
                    <li>标题2</li>
                    <li>标题3</li>
                    <li>标题4</li>
                    <li>标题5</li>
                </ul>
            </div>
        </aside>
    </main>
    <div class="btn-group">
        <button><a href="#top">回到顶部</a></button>
        <button>btn2</button>
        <button>btn3</button>
    </div>
    <footer>footer</footer>

</body>

</html>